Philips MRD300/37/78 Service Manual Download Page 33 | Manualshive

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POWER BOARD

(For Information only)

9-1

It is not recommended for component repair on this board but to
replace the board when it becomes defective.

Therefore no service parts list is published in this chapter.

The only service part available for replacement is:
SW PWR SUP ASSY 110V (/17) ........................ 9965 000 23574
SW PWR SUP ASSY 110 ~ 230V (/78) ............. 9965 000 23628

TABLE OF CONTENTS

Circuit Diagram (/17) ............................................................... 9-2

Circuit Diagram (/78) ............................................................... 9-3
PCB Layout .............................................................................. 9-4

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Summary of Contents for MRD300/37/78

Page 1: ...prior permission of Philips Published by BB ET0409 Service Audio Printed in The Netherlands Subject to modification GB 3139 785 30590 DVD Receiver Version 1 0 TABLE OF CONTENTS Page Location of PC Boards 1 2 Versions Variation Package 1 2 Specifications 1 3 Measurement Setup 1 4 Service Aids 1 5 ESD Safety Instruction 1 6 Setting Procedure Repair Instructions 2 Disassembly Instructions Service pos...

Page 2: ... Input x x Digital Output x x Line Output x x Progressive scan x x Power supply 110V 110 230V x x LOCATION OF PC BOARDS VERSION VARIATION MAIN PCB TUNER PCB POWER PCB POWER KNOB PCB CONTROL PCB VOL PCB PH PCB Type Versions MRD120 Features Board in used ...

Page 3: ...DAC 10 Bits Signal System PAL NTSC Video Format 4 3 16 9 Video S N 56 dB minimum Composite Video Output 1 0 Vp p 75 Ω S Video Output Y 1 0 Vp p 75 Ω C 0 286 Vp p 75 Ω Audio DAC 24 Bits 96 kHz Frequency Response 4 Hz 20 kHz 44 1kHz 4 Hz 22 kHz 48kHz 4 Hz 44 KHz 96KHz Digital Output SPDIF Sony Philips digital interface Coaxial PCM IEC 60958 Dolby Digital IEC 60958 IEC 61937 1 3 MAIN UNIT Power Suppl...

Page 4: ...15kHz e g 7122 707 48001 LF Voltmeter e g PM2534 DUT S N and distortion meter e g Sound Technology ST1700B Frame aerial e g 7122 707 89001 Tuner AM MW LW To avoid atmospheric interference all AM measurements have to be carried out in a Faraday s cage Use a bandpass filter or at least a high pass filter with 250Hz to eliminate hum 50Hz 100Hz RF Generator e g PM5326 Ri 50Ω Bandpass 250Hz 15kHz e g 7...

Page 5: ...x driver set T6 T20 4822 395 50145 Torx driver T10 extended 4822 395 50423 Compact Disc SBC426 426A Test disc 5 5A 4822 397 30096 SBC442 Audio Burn in test disc 1kHz 4822 397 30155 SBC429 Audio Signals disc 4822 397 30184 Dolby Pro logic Test Disc 4822 395 10216 SERVICE AIDS HANDLING CHIP COMPONENTS ...

Page 6: ...ore returning set to customer perform a leakage current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist The leakage current must not exceed 0 5mA CLASS 1 LASER PRODUCT 3122 110 03420 GB Warning Invisible laser radiation when open Avoid direct exposure to beam S Varning Osynlig laserstrålning när apparaten är öppnad och spärren är urkopplad Betrakta ej ...

Page 7: ...te Please refer to the above different tuner area 2 1 Hence in total reprograming will be done by way of the remote control It should run as below a Put the player in stop mode No disc loaded b Press the following key on remote control For MRD120 17 US PLAY 159 111 010 08 PLAY For MRD120 78 LATAM PLAY 159 411 010 08 PLAY After the Region Code is changed it is necessary to reset the system so that ...

Page 8: ...2 2 REPAIR INSTRUCTIONS 1 of 2 2 2 ...

Page 9: ...2 3 REPAIR INSTRUCTIONS 2 of 2 2 3 ...

Page 10: ...Cover as shown in Figure 3 and close the tray manually by pushing it back in 3 Loosen 9 screws and remove the Top Cover by lifting the rear portion upwards before sliding it out towards the rear 5 screws on the back 2 screws each on the left right side 4 Loosen 7 screws lift up the top edge of Front Panel assembly to free some catches before sliding it out towards the front 4 screws on the bottom ...

Page 11: ...may risk touching its neighbouring pc boards or metallic parts To prevent such short circuit use a piece of hard paper or other insulating material between them 3 2 Dismantling of the Tuner PCB 1 Loosen 10 screw C at the back panel as shown in figure 7 2 Loosen 6 screw D on the top of main board as shown in figure 8 Figure 7 Figure 8 C D ...

Page 12: ...4 1 BLOCK DIAGRAM 4 1 ...

Page 13: ...4 2 WIRING DIAGRAM 4 2 JK501 ...

Page 14: ... 34 35 F1 F2 NP P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P13 P12 P14 P15 P16 P17 P18 NX 9G 8G 7G 6G 5G 4G 3G 2G 1G F2 F1 NP NP 36 37 38 39 40 41 42 43 44 45 NP 10G a b c d e f g h k p r s m n j 2G 10G Dp 1G 2G 3G 4G 5G 6G 7G 8G 9G 10G 1G P2 P1 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 10G 9G 8G 7G 6G 5G 4G 3G 2G 1G a b c d e f g h j k m p n r s a b c d e f g h j k m p n r s a b c d e f g ...

Page 15: ...D5 Q205 E5 R201 D3 R202 D3 R203 D3 R204 D3 R205 D3 R207 D3 R208 D3 R210 D2 R211 D2 R212 D2 R213 D2 R214 E1 R215 D2 R216 E1 R217 D2 R218 D4 R219 D4 R221 D5 R222 C5 R223 D5 R224 D4 R225 C5 R226 B5 R227 B5 R228 D5 R231 D2 R232 D2 R233 D3 R234 D3 R235 D4 R236 D3 R237 D1 R238 D1 R239 D1 R240 A2 R241 A2 R242 D1 R243 D1 R244 D1 R245 A1 R246 B1 R247 B1 R248 B1 R249 B2 R250 B2 R251 B2 R252 B2 R253 E4 R254 ...

Page 16: ... A2 C202 A2 C205 B2 C206 A2 C209 A3 C212 B4 C214 A5 C215 A5 C216 A3 C218 A3 C219 A3 C220 A3 C221 A2 C222 A3 C224 B1 C225 A2 C226 A3 C227 B3 C228 B3 IC201 B2 IC202 A3 Q201 A4 Q202 B1 Q203 B5 Q204 B5 Q205 A1 R201 B1 R202 B1 R203 B1 R204 A1 R205 A1 R207 A1 R208 A1 R210 B2 R211 B2 R212 B2 R213 A2 R214 A2 R215 A2 R216 A2 R217 B1 R218 B1 R219 A4 R221 B4 R222 A4 R223 B4 R224 B4 R225 B3 R226 A5 R227 A5 R2...

Page 17: ...2SA733Q P Q203 9965 000 14175 2SA733Q P Q204 9965 000 20268 XISTR NPN SMT TYPE 2SC1623 Q205 9965 000 14175 2SA733Q P IC201 9965 000 23592 IC 18PIN HT48R05A 1 SOP HOLTEK IC202 9965 000 23593 IC 52PIN HT16511 QFP HOLTEK Note Only the parts mentioned in this list are normal service spare parts VOLTAGES 0 0 0 0 3 8 3 8 0 3 8 3 7 0 0 0 0 0 19 7 22 2 22 11 2 19 9 17 8 21 15 6 13 4 20 13 4 20 22 4 18 20 ...

Page 18: ...90 9 adjust output on right channel to minimum 2 RC network serves for damping the IF filter while adjusting the other one 3 For AM RF adjustments the original frame antenna has to be used max symmetric fo max symmetric fo f 30kHz VRF as low as possible 200P short circuit to block AFC 23 IC001 R220 100nF 24 IC001 450kHz Connect pin 29 of IC001 AM Osc with short wire to ground pin 6 AM AFC MW f 15k...

Page 19: ...B4 C037 B3 C038 B4 C039 C4 C040 B3 C041 B3 C042 B4 C043 B4 C044 B3 C047 A1 C048 B1 C0501 A2 CN001 C4 CN002 B1 D001 A1 D002 A1 D003 A4 D004 C3 D005 B1 IC001 B3 IF001 A3 IF002 A3 IF003 C3 L02 B1 L001 A2 Q001 B3 Q002 B4 Q003 A2 R001 A1 R002 B1 R004 A2 R005 B2 R006 A1 R010 C1 R011 C1 R015 B2 R016 B4 R017 C2 R018 B3 R019 C3 R020 B4 R021 C4 R023 B4 R024 B2 R025 C3 R026 C3 R027 B3 R028 B4 R029 B4 R030 B4...

Page 20: ... B2 C030 B3 C035 A2 C047 A1 CN001 B3 CN002 A1 D001 A1 D002 A1 D003 B2 D004 B3 D005 A1 IC001 B2 IF001 B1 IF002 B2 IF003 A2 JWP2 B1 JWP3 A3 JWP4 A3 JWP5 B2 JWP6 B3 JWP7 B2 JWP8 A3 JWP9 B3 L02 A2 L001 B1 Q001 A3 Q002 B2 R018 B3 T001 B1 T002 B2 T003 B2 T005 A2 T006 A1 VC001 A1 VC002 A1 VD001 A2 VD002 A1 VD003 A1 VD004 A2 VR001 A3 XL1 B2 ...

Page 21: ... C016 A3 C020 B2 C021 A3 C022 A3 C023 A3 C023 A3 C026 A3 C029 A2 C031 A3 C032 A2 C033 B2 C034 B2 C036 A3 C037 A2 C038 B3 C039 A3 C040 B2 C041 B2 C042 B3 C043 B2 C044 B3 C048 A2 C050 A3 C052 A2 IC001 A2 Q003 B3 R001 A3 R002 A3 R004 B3 R005 A2 R006 A3 R007 B3 R010 A2 R011 A2 R015 A2 R016 B3 R017 A3 R019 B3 R020 A3 R021 A3 R023 B2 R024 A2 R025 A3 R026 A3 R027 B2 A B A B 3 2 1 3 2 1 ...

Page 22: ...8 VD003 4822 130 81673 1SV149 VD004 4822 130 81673 1SV149 TRANSISTORS INTEGRATED CIRCUITS Q001 4822 130 41198 2SC945P Q002 4822 130 41198 2SC945P Q003 9965 000 22272 XISTR PNP BF550 SOT23 IC001 9965 000 22265 IC 44PIN TEA5757H QFP44 Note Only the parts mentioned in this list are normal service spare parts PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VOLTAGE FM 2 1 0 01 0 01 0 01 0 01 0 0...

Page 23: ...nt repair on this module but to replace the module when it becomes defective Therefore no service parts list is published in this chapter The only service part available for replacement is DVD MECH LOADER ASSY 9965 000 23573 TABLE OF CONTENTS Exploded View DVD Loader 7 2 ...

Page 24: ...Exploded View DVD Loader 7 2 22 7 5 21 6 21 3 10 11 19 13 18 14 4 2 8 23 9 17 20 12 15 1 16 ...

Page 25: ...iver 4X Actiator Driver 6X Actiator Driver 6X Driver 4X Sled TRY DRIVER Vcc2 Vcc2 Vcc1 GND GND OUT1 VSSP1 VDDP2 DRIVER HIGH MBL461 OUT2 BOOT2 TDA8920TH BOOT1 DRIVER LOW RELEASE1 SWITCH1 ENABLE1 CONTROL AND HANDSHAKE PWM MODULATOR MANAGER OSCILLATOR TEMPERATURE SENSOR CURRENT PROTECTION STABI MODE INPUT STAGE mute 9 8 IN1 IN1 22 21 20 17 16 15 VSSP2 VSSP1 DRIVER HIGH DRIVER LOW RELEASE2 SWITCH2 ENA...

Page 26: ... 3 3 3 3 3 3 0 0 2 1 5 5 0 4 0 4 0 4 4 4 3 3 3 1 0 0 1 2 1 7 2 6 2 1 2 2 5 0 7 0 0 0 3 2 0 0 1 3 0 0 2 1 1 7 2 1 9 2 1 2 1 2 1 0 0 0 1 8 1 2 1 9 1 7 1 2 1 3 1 2 3 3 1 5 1 2 1 7 1 2 1 5 2 0 0 0 0 2 5 1 2 2 3 3 1 3 3 3 1 2 1 4 0 1 4 1 3 3 3 1 1 1 1 0 1 4 3 3 0 1 3 3 1 3 2 8 0 2 0 2 0 0 5 1 5 3 3 0 1 4 1 5 1 5 1 5 1 0 0 1 1 6 3 3 1 6 0 1 0 0 1 2 3 3 0 1 1 1 1 3 3 1 4 1 5 0 1 4 0 0 1 2 0 1 1 2 0 3 8 1...

Page 27: ... E5 C2019 E5 C2020 E5 C2021 E6 C2022 E6 C2023 E6 C2024 E6 C2025 E6 C2026 E6 C2027 E6 C2028 E6 C2029 E6 C2030 E6 C2031 E6 C2032 E6 CN801 A1 CN802 B1 CN803 C1 D801 B2 D802 A2 D803 B3 IC201 C6 IC202 C8 IC203 E7 IC204 D6 IC205 D4 IC206 D3 IC207 D3 IC208 D1 IC209 D2 IC210 D1 IC351 B8 IC801 A4 IC802 B2 JK801 A8 JK802 A A8 JK802 B B8 JK805 E1 L187 E3 L201 E5 L202 C7 L203 D1 L204 D2 L205 E2 L206 B7 L207 D...

Page 28: ...584 D2 C585 D2 C586 E2 C587 E2 C588 E2 C589 E2 C590 F2 C591 F2 C592 F2 C593 F2 C594 F2 C595 F2 C596 F2 C597 F2 C598 F2 C599 F2 C951 A2 C952 A2 C955 A2 C956 A2 C957 A2 C958 A2 C959 A2 C960 A2 C961 B3 C962 B3 C963 B3 C964 B3 C965 B3 C966 C3 C967 B3 C968 B3 C969 A3 C970 A3 C971 A3 C972 A3 C973 B3 C974 B3 C975 B3 C976 B3 C977 B3 C978 B3 C979 B3 C980 B3 C984 A4 C4007 C4 C4008 C4 C4009 C4 C4010 B4 C4011...

Page 29: ...2 B7 FB5003 B7 R522 C1 R523 B1 R524 C1 R525 B1 R526 B1 R527 B2 R528 B2 R541 B1 R542 B1 R543 B1 R544 B1 R545 B1 R546 B1 R547 A2 R548 A2 R561 D2 R562 D2 R563 D2 R564 C1 R565 B1 R566 B1 R655 C4 R656 C4 R657 C4 R658 C4 R659 C4 R670 C4 R801 A8 R831 A8 R832 A8 R834 B8 R835 A8 R838 D6 R840 D6 R845 C9 R850 C9 R852 D9 R853 D9 R854 D9 R855 D9 R865 D8 R951 A3 R952 A3 R953 A6 R954 B5 R955 B5 R956 B5 R957 A4 R...

Page 30: ...B3 C5047 A3 C5048 B3 C5049 A3 C5050 A3 C5051 A3 C821 B9 C824 B9 C828 A9 C845 D9 C847 D9 C849 D9 C851 D9 C852 D8 C853 D8 C962 B4 C964 B4 C968 A8 C969 B4 R529 B2 R530 B2 R531 B2 R532 B2 R533 B3 R534 B3 R549 A2 R550 A2 R551 A3 R553 A2 R554 A2 R555 A3 R833 A8 R221 B8 R231 B7 R232 B7 R242 C8 R248 C7 R354 C8 R356 D8 R513 C2 R514 C2 R515 C2 R516 C2 R517 C3 R518 D3 R958 A4 R959 A4 R966 A5 R967 A5 R4001 C4...

Page 31: ...22 OHM 1 2W 5 R534 9965 000 23608 CHIP RES 22 OHM 1 2W 5 R549 4822 051 10518 5R1 5 0 25W R550 4822 051 10518 5R1 5 0 25W R551 9965 000 23608 CHIP RES 22 OHM 1 2W 5 R553 4822 051 10518 5R1 5 0 25W R554 4822 051 10518 5R1 5 0 25W R555 9965 000 23608 CHIP RES 22 OHM 1 2W 5 R957 9965 000 23609 RESISTOR 47 OHM 1 2 W 5 R968 9965 000 23610 RESISTOR 1 OHM 1 4W 5 R5050 9965 000 23611 RESISTOR 1 2K OHM 1 4W...

Page 32: ... 22230 IC 14 PIN 74LVC04AD IC505 9965 000 22229 IC14 PIN HEF4013BT IC801 9965 000 21182 IC 64 PIN ES6603S LQFP ESS IC802 9965 000 23620 IC 28P AM5868S HSOP AMTEK IC953 9965 000 12512 BA05T ROHM IC954 9965 000 12512 BA05T ROHM IC5001 9965 000 23621 IC8PAPA3541SOP 8HEADPHONE Note Only the parts mentioned in this list are normal service spare parts ELECTRICAL PARTS LIST MAIN BOARD 8 8 TRANSISTORS INT...

Page 33: ... the board when it becomes defective Therefore no service parts list is published in this chapter The only service part available for replacement is SW PWR SUP ASSY 110V 17 9965 000 23574 SW PWR SUP ASSY 110 230V 78 9965 000 23628 TABLE OF CONTENTS Circuit Diagram 17 9 2 Circuit Diagram 78 9 3 PCB Layout 9 4 ...

Page 34: ...CIRCUIT DIAGRAM POWER BOARD 17 9 2 9 2 ...

Page 35: ...CIRCUIT DIAGRAM POWER BOARD 78 9 3 9 3 ...

Page 36: ...PCB LAYOUT POWER BOARD 17 78 9 4 9 4 ...

Page 37: ...10 1 10 1 MECHANICAL EXPLODED VIEW use for MRD120 17 use for MRD120 78 ...

Page 38: ... 6P SL14 22AH 78 38 9965 000 20576 AC SOCKET 78 39 9965 000 12817 BUSHING AC LINE BUSHING 17 9965 000 23576 SATELLITE SPEAKER ASSY 9965 000 23577 SUBWOOFER ASSY 9965 000 23578 FFC WIRE 24P L 150MM 17 9965 000 23579 LINE CORD 17 9965 000 23629 LINE CORD 78 9965 000 23580 RCA CABLE 1500MM 17 9965 000 20577 RCA CABLE 1500MM 78 9965 000 23582 LOOP ANTENNA 9965 000 23583 FM ANTENNA 17 9965 000 14632 FM...

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